Canadian Xpress has created their own formula to help combat fungal leaf disease. Powdery Mildew Treatment (or PMT) can be used as a preventative measure or as a treatment for Powdery Mildew.
If you notice your plants have developed white spots on leaves this could be fungal leaf disease and it is highly important that you treat the problem before it spreads and potentially destroys your whole crop. PMT will stimulate your plants natural defences so your plant can protect itself and wipe out the disease.
This solution can be sprayed directly on to the leaves and can be used right up until harvest.